[mythtv-users] Duplicate Tuners showing up in Preferred Input

Jay Foster jayfoster at roadrunner.com
Thu Nov 15 18:21:08 UTC 2012

On 11/15/2012 4:00 AM, mythtv-users-request at mythtv.org wrote:
> Message: 8
> Date: Thu, 15 Nov 2012 00:08:41 -0700
> From: Lee Maisel<maisel at lobo.net>
> To: Discussion about MythTV<mythtv-users at mythtv.org>
> Subject: Re: [mythtv-users] Duplicate Tuners showing up in Preferred
> 	Input
> Message-ID:<50A494F9.3030608 at lobo.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> Raymond Wagner wrote:
>> >  On 11/14/2012 21:47, Lee Maisel wrote:
>>> >>  Does that mean that I can have 12 things recording (possibly)?  All my
>>> >>  content is OTA, so does this apply to me or should I disable virtual
>>> >>  tuners?
>> >
>> >  When using digital television, you are not receiving a video, you are
>> >  receiving a data stream. That data stream can carry multiple channels
>> >  simultaneously, and is called a multiplex. Your tuner captures the
>> >  entire multiplex, and then filters that down to the single logical
>> >  channel it sends to MythTV. Virtual tuners in MythTV allow it to
>> >  request multiple independent logical channels from that single
>> >  multiplex through that single tuner.
>> >  _______________________________________________
>> >  mythtv-users mailing list
>> >  mythtv-users at mythtv.org
>> >  http://www.mythtv.org/mailman/listinfo/mythtv-users
>> >
> I understand. So essentially I can have 12 things recording at the same
> time with the 3 HD Homerun units?  That's damn cool.
> Not that I would possibly have that much running, but that should
> certainly negate the possibility of a conflict!:)
> Thanks!
> Lee
In theory, yes, you are correct.  The reality is not quite so useful.  
You say you are OTA only.  If you are in the USA, then my experience has 
been that most TV stations broadcasts (multiplex) contain only one 
channel (data stream) with content worth watching.  Finding content on 
more than one data stream within the same multiplex (channel) at the 
same time that is worth watching is a rare thing indeed.  It is unlikely 
that you will actually take advantage of the virtual tuners.  YMMV.


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